3 - ENT - Otology - Intracranial complications of temporal bone infection

Question 1

what 5 complications can occur with temporal bone infection

Answer 1

brain abscess
extradural abscess
sigmoid sinus thrombophlebitis
subdural abscess
meningitis

Question 2

Brain abscess - what is it? how many in kids have ENT cause?

Answer 2

accumulation of pus surrounded by encephalitis

1/3rd in kids have an ENT cause

Question 3

Brain abscess - commonly where? enter via?

Answer 3

commonly ipsilateral temporal lobe or cerebellum

enters via venous route - causing thrombophlebitis

Question 4

Extradural abscess -what is it? Sx? may cause?

Answer 4

infection of extradural space - pus, granulation tissue, effusion
commonly aSx
may cause sigmoid thrombophlebitis/thrombosis

Question 5

Sigmoid sinus thrombophlebitis - what is it? further consequence?

Answer 5

inflamm - leading to thrombus formation

may propagate - to reach IJV -> painful swelling in neck

Question 6

Sigmoid sinus thrombophlebitis - ass w/presenting signs?

Answer 6

malaise, headache, fever, rigors, increased ICP

Question 7

Subdural abscess - what is ti? ENT association?

Answer 7

circumscribed collection of pus in subdural space

less commonly ass w ENT disease

Question 8

Meningitis - what can cause this? in who?

Answer 8

most commonly realted to ENT in children - acute OM / cholesteatoma